BlockStreamTracker (Alluxio Parent 2.7.2-SNAPSHOT API)

```
public class BlockStreamTracker
extends Object
```
Used to emit block reader/writer open/close events.

Constructors
Constructor and Description
`BlockStreamTracker()`

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`readerClosed(BlockReader reader, BlockStoreLocation location)` Called when an existing block reader is closed.
`static void`	`readerOpened(BlockReader reader, BlockStoreLocation location)` Called with a new block reader.
`static void`	`registerListener(BlockClientListener listener)` Register a new listener.
`static void`	`unregisterListener(BlockClientListener listener)` Unregisters a listener.
`static void`	`writerClosed(BlockWriter writer, BlockStoreLocation location)` Called when an existing block writer is closed.
`static void`	`writerOpened(BlockWriter writer, BlockStoreLocation location)` Called with a new block writer.

public static void registerListener(BlockClientListener listener)

public static void unregisterListener(BlockClientListener listener)

Unregisters a listener.

public static void readerOpened(BlockReader reader,
                                BlockStoreLocation location)

Called with a new block reader.

public static void readerClosed(BlockReader reader,
                                BlockStoreLocation location)

Called when an existing block reader is closed.

public static void writerOpened(BlockWriter writer,
                                BlockStoreLocation location)

Called with a new block writer.

public static void writerClosed(BlockWriter writer,
                                BlockStoreLocation location)

Called when an existing block writer is closed.

Class BlockStreamTracker